Universal detection device of engine valve lift

Abstract

The invention discloses a universal detection device of an engine valve lift, which comprises a dial indicator, a fixed frame, a connecting plate, a speed reducing mechanism, a first angle dial and a second angle dial, wherein the fixed frame is fixedly connected with the speed reducing mechanism, the speed reducing mechanism is fixedly connected with the connecting plate, the first angle dial is arranged on the output shaft of the speed reducing mechanism, and the dial indicator is fixedly connected with the second angle dial. The universal detection device can be used as fixed equipment for long-term use and can ensure the precision since references are relatively fixed; the references of all the parts of the device are unified, the errors are fixed, the precision is within an acceptable range, and a relative error limit can be computed through absolute errors; the axial line of the dial indicator and the axial line of a valve rod are easily adjusted to be collinear, and the valve stroke can be truly reflected through measured numerical values; through the two-stage speed reducing mechanism, the rotating speed of the output shaft can be decreased, the torque of an input shaft is reduced, the operation is quite easy, and particularly a unidirectional clutch prevents the input shaft from reversely rotating and further ensures the rotating accuracy of the input shaft; and the device has strong adaptability.

Description

technical field [0001] The invention relates to a device in the technical field of engine valve detection, in particular to a universal detection device for engine valve lift. Background technique [0002] It is often necessary to detect the lift of the intake and exhaust valves when mapping the cam profile or checking the phase diagram of the intake and exhaust valves of the engine. The existing detection devices have difficulty in positioning, data distortion and large errors. as attached figure 1 As shown, it is the detection device of the existing engine valve lift, the detection device includes a workbench 1', a wooden fixing frame 2', a wrench 3', an engine 4', a magneto rotor 5', a valve rocker arm 6', a thousand The sub-meter 7' and the magnetic frame 8', in which: the engine 4' is horizontally installed in the wooden fixed frame 2', the wooden fixed frame 2' is horizontally installed on the workbench 1', and the dial indicator 7' is set on the magnetic frame 8', ...

AI Technical Summary

Problems solved by technology

[0003] The existing valve lift testing device has the following disadvantages: the existing testing device has a temporary shortcoming; the engine 4' is placed on the wooden fixed frame 2' and the magnetic frame 8' is placed on the workbench 1', and both positioning references It is not the same, and the wooden fixing frame 2' is easy to wear, and the position of the engine 4' will change every time it is measured; The error of the angle system is very large; the accuracy of the measurement value of the existing test device depends on the operator's experience; the wrench 3' rotates the crankshaft angle, and it is difficult to guarantee the accuracy of each degree by stepping one step after another for a long time

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